氧化钇对激光熔覆镍基40Cr钢组织与性能的影响  

Effect of Yttrium Oxide on Microstructure and Properties of Laser Cladding Nickel Base 40Cr Steel

作　　者：张新建[1] 牛莉[1] 王甫[1] 孙燕 ZHANG Xinjian;NIU Li;WANG Fu;SUN Yan(School of Aeronautics and Materials,Anhui Technical College of Mechanical and Electrical Engineering,Wuhu 241000,China)

机构地区：[1]安徽机电职业技术学院航空与材料学院,安徽芜湖241000

出　　处：《新乡学院学报》2022年第9期54-58,共5页Journal of Xinxiang University

基　　金：安徽高校自然科学研究重点资助项目(KJ2020A1118,KJ2021A1514);安徽机电职业技术学院横向课题(HX2020005,HX2021072,HX2022017);芜湖市金属基复合材料激光增材制造工程技术研究中心支持项目。

摘　　要：为了改善40Cr钢的耐磨性能,采用TJ-HL-5000型光纤激光器对40Cr钢表面进行激光熔覆Ni60处理,采用SEM、XRD、显微硬度计和磨损试验机分别研究了不同YO含量对熔覆层组织和性能的影响。结果表明,当Y_(2)O_(3)含量从0增加到1.0%时,熔覆层组织逐渐变细,但是,当Y_(2)O_(3)含量超过1.0%时,熔覆层的组织粗化。与未添加Y_(2)O_(3)时相比,添加量分别为0.5%、1.0%、2.0%的熔覆层平均硬度分别提高了6.7%、27.6%、19.2%,磨损量分别下降了7.2%、21.0%、14.9%,在Y_(2)O_(3)添加量为1.0%的情况下,所得到的熔覆层组织最细,耐磨性能最好。In order to improve the wear resistance of 40Cr steel, the surface of 40Cr steel was treated by laser cladding Ni60 with TJ-HL-5000 fiber laser. The effects of different Y_(2)O_(3)content on the microstructure and properties of the cladding layer were studied by SEM, XRD, microhardness tester and wear tester. The results show that when the content of Y_(2)O_(3)increases from 0 to1.0%, the microstructure of the cladding layer becomes finer gradually, but when the content of Y_(2)O_(3)exceeds 1.0%, the microstructure of the cladding layer becomes coarser. Compared with that without Y_(2)O_(3)the average hardness of the cladding layer with 0.5%, 1.0% and 2.0% addition increased by 6.7%, 27.6% and 19.2% respectively, and the wear amount decreased by 7.2%,21.0% and 14.9% respectively. When Y_(2)O_(3)addition was 1.0%, the microstructure of the cladding layer was the finest and the wear resistance was the best.

关 键 词：Y_(2)O_(3) 激光熔覆 显微硬度 耐磨性 

分 类 号：TG665[金属学及工艺—金属切削加工及机床] TQ050.4[化学工程]